stealc | f6284bf206a074e322c8b7a8211bbc9312ef82e5f8de021f5efeee1bf825fa7a

General

Target

f6284bf206a074e322c8b7a8211bbc9312ef82e5f8de021f5efeee1bf825fa7a.exe
Size

1.7MB
MD5

cadd3d3e9618bb546c3e23b5bd7c9f97
SHA1

8a99a2cdd18bf517f719c981b89d70b65cfb6650
SHA256

f6284bf206a074e322c8b7a8211bbc9312ef82e5f8de021f5efeee1bf825fa7a
SHA512

10c26e018db102358bbbad09faefc7c358092eded59bb88887896519e7cb4bc5ca94af86f62b407f2532443f454bec46d4d1ecb66d57dfbda7719b52d5818eed
SSDEEP

24576:EM7fgaiZEy2LhRnw4Q/SJV/vkP+gDg8fklKWzK7S2GUC9SHicUPWIrgeA/OvvKzI:gTZARnw4foGr47VGN8HZU5gu3aQj

Score

10^/10

stealc brat defense_evasion discovery stealer

Malware Config

Extracted

Family

stealc

Botnet

brat

C2

http://185.215.113.206

Attributes

url_path
/c4becf79229cb002.php

Signatures

Stealc
Stealc is an infostealer written in C++.
stealer stealc
Stealc family
stealc

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs

defense_evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	f6284bf206a074e322c8b7a8211bbc9312ef82e5f8de021f5efeee1bf825fa7a.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	f6284bf206a074e322c8b7a8211bbc9312ef82e5f8de021f5efeee1bf825fa7a.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	f6284bf206a074e322c8b7a8211bbc9312ef82e5f8de021f5efeee1bf825fa7a.exe

Identifies Wine through registry keys 2 TTPs 1 IoCs

Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

defense_evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Software\Wine	f6284bf206a074e322c8b7a8211bbc9312ef82e5f8de021f5efeee1bf825fa7a.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
4956	f6284bf206a074e322c8b7a8211bbc9312ef82e5f8de021f5efeee1bf825fa7a.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4884	4956	WerFault.exe	81

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f6284bf206a074e322c8b7a8211bbc9312ef82e5f8de021f5efeee1bf825fa7a.exe

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	f6284bf206a074e322c8b7a8211bbc9312ef82e5f8de021f5efeee1bf825fa7a.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	f6284bf206a074e322c8b7a8211bbc9312ef82e5f8de021f5efeee1bf825fa7a.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4956	f6284bf206a074e322c8b7a8211bbc9312ef82e5f8de021f5efeee1bf825fa7a.exe
4956	f6284bf206a074e322c8b7a8211bbc9312ef82e5f8de021f5efeee1bf825fa7a.exe
4956	f6284bf206a074e322c8b7a8211bbc9312ef82e5f8de021f5efeee1bf825fa7a.exe
4956	f6284bf206a074e322c8b7a8211bbc9312ef82e5f8de021f5efeee1bf825fa7a.exe

C:\Users\Admin\AppData\Local\Temp\f6284bf206a074e322c8b7a8211bbc9312ef82e5f8de021f5efeee1bf825fa7a.exe
"C:\Users\Admin\AppData\Local\Temp\f6284bf206a074e322c8b7a8211bbc9312ef82e5f8de021f5efeee1bf825fa7a.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:4956
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4956 -s 1496
  2⤵
  - Program crash
  PID:4884

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 4956 -ip 4956
1⤵
PID:2932

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Discovery

Query Registry

5

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Virtualization/Sandbox Evasion

2

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/4956-0-0x0000000000FC0000-0x0000000001666000-memory.dmp

Filesize
6.6MB

Download
memory/4956-1-0x0000000077384000-0x0000000077386000-memory.dmp

Filesize
8KB

Download
memory/4956-2-0x0000000000FC1000-0x0000000000FD8000-memory.dmp

Filesize
92KB

Download
memory/4956-3-0x0000000000FC0000-0x0000000001666000-memory.dmp

Filesize
6.6MB

Download
memory/4956-4-0x0000000000FC0000-0x0000000001666000-memory.dmp

Filesize
6.6MB

Download
memory/4956-5-0x0000000000FC0000-0x0000000001666000-memory.dmp

Filesize
6.6MB

Download
memory/4956-6-0x0000000000FC0000-0x0000000001666000-memory.dmp

Filesize
6.6MB

Download
memory/4956-7-0x0000000000FC0000-0x0000000001666000-memory.dmp

Filesize
6.6MB

Download
memory/4956-8-0x0000000000FC0000-0x0000000001666000-memory.dmp

Filesize
6.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads